Route 70 (U.S. Route 70)

Route 70 (U.S. Route 70)
Country	US
Type	US
Route	70
Length mi	2385
Established	1926
Direction a	West
Terminus a	I‑10 in Glendale
Direction b	East
Terminus b	Atlantic Ocean at Atlantic Beach
States	Arizona, New Mexico, Texas, Oklahoma, Arkansas, Tennessee, Mississippi, Alabama, Georgia, South Carolina, North Carolina

Route 70 (U.S. Route 70)

U.S. Route 70 is a major east–west United States Numbered Highway extending from Glendale to Atlantic Beach, traversing diverse landscapes and connecting metropolitan centers, historic towns, and military installations. The highway serves as a principal arterial across the Southwestern United States, Mid-South, and Southeastern United States, intersecting with Interstate corridors, rail hubs, and ports that link regions such as Phoenix, Albuquerque, El Paso, Oklahoma City, Little Rock, Memphis, Birmingham, Atlanta, Charlotte, and Raleigh. Designations, realignments, and spur routes reflect interactions with federal programs, state departments of transportation, and regional planning authorities.

Route description

U.S. Route 70 begins near I‑10 in Glendale and proceeds eastward through the Sonoran Desert into Maricopa County, intersecting corridors that link to Phoenix Sky Harbor and freight arteries serving the Port of Long Beach logistics network. Crossing into New Mexico, the route passes near Albuquerque and Sandia Mountains, then follows alignments adjacent to the Rio Grande corridor and freight rail lines serving Belen. In Texas, the highway skirts the Permian Basin energy fields and connects to El Paso area roadways before entering Oklahoma, where it traverses the Oklahoma City metroplex and links to Will Rogers World and civic centers.

Across Arkansas, the route serves Fort Smith, Little Rock, and industrial arteries tied to the Mississippi River and inland waterways, intersecting with I‑40 and I‑30 near major freight nodes. In Tennessee, U.S. 70 parallels the Tennessee River and runs through Memphis and Knoxville, providing access to Naval Support Activity facilities and academic centers such as Vanderbilt and University of Tennessee. The highway continues into Mississippi and Alabama, serving cities like Meridian and Birmingham, before entering Georgia and the Atlanta metropolitan area, where it intersects with I‑75, I‑85, and links to Hartsfield–Jackson.

East of Atlanta, U.S. 70 threads through the Blue Ridge Mountains foothills in North Carolina and South Carolina, connecting to historic districts in Asheville, Greenville, and Charlotte, ultimately reaching the Atlantic coastline at Atlantic Beach. Along its course the route intersects national park access roads, military sites, and rail yards such as those operated by Union Pacific Railroad and CSX Transportation.

History

The highway was established in 1926 as part of the original U.S. Highway System conceived by the AASHO and adopted during the tenure of officials such as Thomas H. MacDonald of the BPR. Early alignments superseded auto trails like the Old Spanish Trail and sections of the Lee Highway. During the Great Depression, federal programs including the Works Progress Administration and projects under the New Deal funded paving and bridge construction on U.S. 70, improving connections to Fort Bragg and Camp Shelby.

World War II demands elevated the route's strategic importance for troop movements to installations such as Fort Benning and Fort Bragg, and postwar growth spurred suburbanization around Charlotte, Raleigh, and Phoenix. The Interstate era, highlighted by construction of I‑40, I‑10, and I‑85, prompted bypasses, concurrencies, and decommissioning of segments where limited‑access freeways supplanted older alignments. Environmental laws like the NEPA influenced later widening projects, while historic preservation statutes protected segments adjacent to landmarks such as Vicksburg.

Over decades U.S. 70 saw re‑routing for flood control projects tied to the MR&T and reconstruction after hurricanes affecting the Southeast United States coast. Local and state initiatives, including corridor studies by the ALDOT, NCDOT, and TDOT, have guided modernization while balancing community preservation in towns like Wilson and Goldsboro.

Major intersections and termini

Major western terminus: intersection with I‑10 near Glendale and regional connectors that feed Phoenix. Interchanges with principal Interstate routes include I‑17 feeder links in Arizona, I‑25 at Albuquerque, I‑20 and I‑30 in Texas and Arkansas, I‑40 across Tennessee and North Carolina, and I‑95 proximate access via Raleigh feeders. Eastern terminus: Atlantic coastal terminus at Atlantic Beach adjacent to the Atlantic Ocean and port facilities serving eastern North Carolina.

Other significant junctions: US 60 and US 191 intersections in the Southwest, US 62 and US 64 concurrencies near Oklahoma City, US 65 and US 67 connections in Little Rock, and urban interchanges with US 78 near Birmingham. The route links to ports and airports including Charleston, Savannah, RDU, and CLT.

Special routes and alignments

U.S. 70 features numerous business loops, bypasses, and alternates managed by state DOTs. Notable business alignments include downtown spurs through Memphis and Raleigh, historic alignments preserved in Hendersonville and Granite Falls, and truck routes circumventing low clearances near Jacksonville. Alternate designations and concurrent segments occur with US 70A, US 70 Business, and state highways in Arkansas and Oklahoma, while urban realignments in Charlotte and Atlanta reflect freeway conversions and managed lanes projects by metropolitan planning organizations such as the MPO structures in the Charlotte Region and ARC.

Preserved historic stretches provide context for cultural tourism along corridors near Great Smoky Mountains gateways and Civil War sites such as Shiloh and Fort Donelson, where interpretive signage marks original roadbeds. Rail‑adjacent alignments maintain access to yards operated by BNSF Railway and Norfolk Southern Railway.

Traffic, upgrades, and future plans

Traffic volumes vary from rural two‑lane segments in New Mexico to multi‑lane arterial and limited‑access sections in metropolitan areas like Phoenix, Oklahoma City, and Charlotte. Freight movements utilize U.S. 70 as an alternative to interstates, interfacing with freight rail corridors and inland port initiatives such as the Global TransPark and inland terminals in Jackson. Safety and congestion programs funded through the NHPP and state capital improvement plans have supported bridge replacements, interchange reconstructions near I‑40 and I‑85, and pavement rehabilitation projects overseen by FHWA grant mechanisms.

Planned upgrades include widening projects under study by NCDOT and ADOT corridor plans, interchange modernization in Little Rock coordinated with AHTD, and resiliency measures against flooding coordinated with the FEMA. Transit‑oriented development proposals and multimodal integration near Raleigh and Charlotte aim to link U.S. 70 corridors with commuter rail initiatives championed by agencies like SCDOT and local MPOs. Future realignments will reflect environmental review under NEPA and funding from federal infrastructure legislation such as recent surface transportation bills.

Category:United States Numbered Highways